lagging

• 名词，指用于包裹管道、锅炉或铺设于阁楼等处的保温隔热材料，以防止热量散失。

A noun referring to material, such as insulation, used to wrap around pipes, boilers, or laid in attics to prevent heat loss.

不可数

1. Thermal insulation materialB2formaltechnical

   A covering or material, such as foam or fiberglass, applied to pipes, boilers, or attic spaces to prevent heat loss.

   保温材料

   • The plumber installed lagging around the hot water pipes to save energy.
   • Attic lagging helps reduce heating costs in winter.
   • The old boiler's lagging was damaged and needed replacement.
   • They used specialized lagging for the industrial steam system.

   同义词insulation

• 动词，表示在运动、进展或发展方面落后，或表示回应、性能上的延迟。

A verb used to indicate falling behind in movement, progress, or development, or to describe a delay in response or performance.

1. Fall behindB1formal

   To move or develop more slowly than others; to fail to keep pace.

   落后

   • The runner began to lag behind the pack after the first mile.
   • Her progress in math started to lag compared to her classmates.
   • The company's sales are lagging behind its competitors.

   同义词dawdledragfall behindlingerloiterstraggletarrytrail

   反义词leadoutpaceoutstripovertakeprecede

2. Imprison or confineC1informalbritish

   To lock someone up in a prison or similar place of confinement.

   关进监狱

   • The thief was lagged for five years.
   • They threatened to lag him if he didn't cooperate.
   • He got lagged for his involvement in the robbery.

   同义词confinedetainimprisonincarceratejaillock up

   反义词freerelease

3. Throw at a markC1informalamerican

   To toss or pitch an object, such as a coin, towards a target.

   掷向目标

   • The children lagged pennies against the wall.
   • He lagged a stone at the can to knock it over.
   • They were lagging coins at a line drawn in the dirt.

   同义词castchuckflinglobpitchthrowtoss

4. Insulate against heat lossC1formalbritish

   To cover pipes, boilers, or other equipment with insulating material to prevent heat from escaping.

   保温

   • The plumber lagged the hot water pipes to save energy.
   • They lagged the boiler with a special foam material.
   • Properly lagging your attic can reduce heating costs.

   同义词cladinsulatejacketwrap